Family of products


Complete Kit

$599.00 View product details

CSBS Kit without Toy Kit

$275.00 View product details

Toy Kit

$350.00 View product details


$70.00 View product details

Record Forms and Caregiver Questionnaire Forms

$60.00 View product details

Sampling & Scoring DVD

$150.00 View product details

CSBS Developmental Profile

View CSBS DP details

What’s the best way to catch communication delays in young children?

Use CSBS™—a norm-referenced, standardized instrument for infants, toddlers, and preschoolers

CSBS logoFor young children at risk for communication delays and impairments, there’s no better assessment tool than Communication and Symbolic Behavior Scales™ (CSBS™)—a reliable, in-depth instrument that uses parent interviews and direct observations of natural play to collect crucial information on communication development. Unlike other language assessments, CSBS surveys both communication skills and often-overlooked indicators of symbolic development, including gestures, facial expressions, and play behaviors. Backed by technical data and compatible with today’s popular developmental curricula, CSBS is your key to meeting the urgent need for early identification of language and communication disorders.

Looking for a shorter, faster screening and evaluation tool for communicative behavior and symbolic development? Discover CSBS DP™.











At a glance

What is it?

A reliable instrument that assesses a communicative behavior and symbolic development in infants, toddlers, and preschoolers at risk for communication delays.

Which age range does it cover?

CSBS is used with infants and toddlers whose functional communication age is between 6 and 24 months and for children up to 72 months who exhibit atypical development.

What areas does it assess?

CSBS consists of 22 communication and symbolic rating scales grouped into seven “clusters”: communicative functions, gestural communicative means, vocal communicative means, verbal communicative means, reciprocity, social-affective signaling, and symbolic behavior.

Who completes it?

Caregivers and professionals trained to assess young children (e.g., speech-language pathologists, early interventionists, or psychologists); professionals score

How long does it take?

Approximately 50–75 minutes for child assessment; 60–75 minutes for in-depth scoring

What do the scores tell us?

The scoring procedure yields

  • raw scores and scale scores for the 22 scales
  • percentile ranks or standard scores for the seven clusters
  • a percentile rank or standard overall composite score
  • norms by chronological age (8–24 months) or by language stage (prelinguistic, early one-word, late one-word, multiword)

Is it valid and reliable?

Yes, CSBS is norm-referenced and supported by both field validation and psychometric studies.